/**
 * Created by asus on 2017/4/27.
 */
import java.util.Scanner;
public class MyDCTester {




             public static void main (String[] args) {

                 String expression, again;

                 int result;

                 try
                 {
                       Scanner in = new Scanner(System.in);

                       do
                           {
                             MyDC evaluator = new MyDC();
                             System.out.println ("Enter a valid postfix expression: ");
                             expression = in.nextLine();

                            result = evaluator.evaluate (expression);
                             System.out.println();
                             System.out.println ("That expression equals " + result);

                             System.out.print ("Evaluate another expression [Y/N]? ");
                             again = in.nextLine();
                             System.out.println();
                           }
                      while (again.equalsIgnoreCase("y"));
                     }
                 catch (Exception IOException)
                 {
                       System.out.println("Input exception reported");
                     }
               }
}
